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Lightning equipment(サンダー, Sandā?) is a recurring type of equipment in the Final Fantasy series. Although less in number than its brethren flame equipment and ice equipment, Lightning equipment has been around since Final Fantasy II. It is also known as Thunder, Bolt, Yellow, Spark, and sometimes Shock or Shocking equipment, depending on which game it is featured in, and sometimes changes between names in the same game.

VII
There are no lightning-elemental weapons or armor (besides the ones listed below). Instead, by pairing the lightning-element with the Elemental Materia in the weapon slot makes lightning-elemental weapons. The Armor slot makes lightning-elemental armor.

FFA
The weapon is called Thunder and it has a spear icon before its name. The Thunder is the strongest spear, having an attack power of 46, and deals lightning-elemental damage. It can be bought for 11,250 GP at the Weapon shop in the plain of Floatrocks.

FFL
The weapon Elec has a sword icon before its name. It can be bought in Southwest Town and Ameyoko for 24,700 GP. It has 50 use and an attack power of 10, the damage formula for Elec is base on Strength. This sword is Elec-elemental.

FFL2
The weapon is called Thunder and it has an axe icon before its name. It can be bought for 17000 GP in Race Circuit and Hana's Town. It has 40 use, it also increases a Robot's HP by 81 and increases their Str by 18. The damage formula for Thunder is the user's Str x12, deals thunder-elemental damage.